VIDEO: Sneak Peek - 'Where Bluebirds Fly' Episode of ONCE UPON A TIME

Below, check out a sneak peek at the next episode of ONCE UPON A TIME titled "Where Bluebirds Fly". In the episode, airing Sunday, April 23rd on ABC, destroying a sorceress will take the ultimate sacrifice! "Once Upon a Time" stars Ginnifer Goodwin as Snow White/Mary Margaret, Jennifer Morrison as Emma Swan, Lana Parrilla as the Evil Queen/Regina, Josh Dallas as Prince Charming/David.

The cast also includes Emilie de Ravin as Belle, Colin O'Donoghue as Hook, Jared S. Gilmore as Henry Mills, Sean Maguire as Robin Hood, Rebecca Mader as Wicked Witch/Zelena and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Edward Kitsis and Adam Horowitz are creators and executive producers. Steve Pearlman, David H. Goodman and Andrew Chambliss are also executive producers. The series is produced by ABC Studios.